It could be one of three things; a) a UFO, b) the Russians, or c) a major marketing campaign by IKEA to really highlight "the wonderful everyday." And before you start thinking "what's going on in the skies over Ballier?!", this happened in a Siberian IKEA outlet, not in Ballymun. 

First of all, here are a number of pics via The Siberian Times, depicting what looks like a large spotlight in the Sky, much like the ones Jim Carrey was oblivious to in The Truman Show. 

And now to the footage, which doesn't really show IKEA much at all...

To quote one follower on twitter...

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